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Vacuum interrupter/ operator – Siemens vacuum circuit breaker 38-3AH3 38 kV User Manual

Page 25

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Vacuum interrupter/
operator

Figure 18: Operating mechanism section diagram (drawout trip-free linkage shown) mechanism OPEN, closing spring DISCHARGED

.

62.2

50.3.1

50.3

62.1

62.3

62.5

62.5.1

62.2.2

64.5*

54.1*

62.8*

64.2*

64.3*

63.5*

64.5*

63.0*

48.0* 63.5*

63.7*

63.5*

63.1*

48.0 - Insulating coupler
50.3 - Charging flange
50.3.1 - Driver
53.0 - Close pushbutton
53.1 - Close coil 52SRC
54.0 - Open pushbutton
54.1 - Trip coil 52T
62.1 - Charging shaft
62.2 - Crank
62.2.2 - Closing-spring mounting
62.3 - Cam disc
62.5 - Lever
62.5.1 - Pawl roller
62.5.2 - Close-latch pawl
62.6 - Drive lever
62.8 - Trip-free coupling rod
62.8.1 - Spring return-latch
62.8.2 - Trip-free coupling link (draw bar)
62.8.3 - Trip-free coupling lever
62.8.5 - Push rod and cam assembly
62.8.6 - Interlock lever push rod
62.8.7 - Interlock lever actuator
62.8.8 - Trip-free actuator
63.0 - Jack shaft
63.1 - Lever - phase C
63.5 - Lever - phase B
63.7 - Lever - phase A
64.0 - Opening spring
64.2 - Trip-latch pawl
64.2.1 - Trip-latch pin
64.2.2 - Latching pawl-release lever
64.3 - Lever
64.3.1 - Jack-shaft pawl
64.5 - Opening-spring shaft

* Items moved from position shown in

Figure 20: Operating mechanism section
diagram (drawout trip-free linkage shown)
mechanism CLOSED, closing spring
CHARGED on page 27 on trip operation.
Underlined items moved from position
shown in Figure 17: Operating mechanism
section diagram (drawout trip-free linkage
shown) mechanism OPEN, closing spring
DISCHARGED on page 24 on closed spring
discharge operation.

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